Synthesis 2007(13): 1939-1942  
DOI: 10.1055/s-2007-983726
PAPER
© Georg Thieme Verlag Stuttgart · New York

Facile Preparation of 2-Imidazolines from Aldehydes with tert-Butyl Hypochlorite

Midori Ishihara, Hideo Togo*
Graduate School of Science, Chiba University, Yayoi-cho 1-33, Inage-ku, Chiba 263-8522, Japan
e-Mail: togo@faculty.chiba-u.jp;
Further Information

Publication History

Received 9 April 2007
Publication Date:
18 June 2007 (online)

Abstract

An efficient and high-yield preparation of 2-imidazolines was achieved from aldehydes and ethylenediamines in the presence of tert-butyl hypochlorite. By this method, 1,3-bis(imidazolin-2-yl)benzene and 2,6-bis(imidazolin-2-yl)pyridine, which act as chiral ligands, could be prepared directly from the corresponding dialdehydes in high yields.